Home / 8,686.89-13,033.46-3,418.99

Finding the Fourth Proportional to 8,686.89, 13,033.46 and 3,418.99

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Solution

The fourth proportional to 8,686.89, 13,033.46 and 3,418.99 is: 5,129.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,686.89 : 13,033.46 = 3,418.99 : x
  2. Step 2: Convert to fraction form
    8,686.89/13,033.46 = 3,418.99/x
  3. Step 3: Cross multiply
    8,686.89x = 13,033.46 × 3,418.99
  4. Step 4: Simplify right side
    8,686.89x = 44,561,269.41
  5. Step 5: Solve for x
    x = 44,561,269.41/8,686.89
  6. Step 6: Final answer
    x = 5,129.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.